PREHOOK: query: explain 
select PI() FROM src LIMIT 1
PREHOOK: type: QUERY
POSTHOOK: query: explain 
select PI() FROM src LIMIT 1
POSTHOOK: type: QUERY
ABSTRACT SYNTAX TREE:
  (TOK_QUERY (TOK_FROM (TOK_TABREF src)) (TOK_INSERT (TOK_DESTINATION (TOK_DIR TOK_TMP_FILE)) (TOK_SELECT (TOK_SELEXPR (TOK_FUNCTION PI))) (TOK_LIMIT 1)))

STAGE DEPENDENCIES:
  Stage-1 is a root stage
  Stage-0 is a root stage

STAGE PLANS:
  Stage: Stage-1
    Map Reduce
      Alias -> Map Operator Tree:
        src 
          TableScan
            alias: src
            Select Operator
              expressions:
                    expr: pi()
                    type: double
              outputColumnNames: _col0
              Limit
                File Output Operator
                  compressed: false
                  GlobalTableId: 0
                  table:
                      input format: org.apache.hadoop.mapred.TextInputFormat
                      output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat

  Stage: Stage-0
    Fetch Operator
      limit: 1


PREHOOK: query: select PI() FROM src LIMIT 1
PREHOOK: type: QUERY
PREHOOK: Input: default@src
PREHOOK: Output: file:/home/edward/hive/hive/build/ql/scratchdir/hive_2010-03-25_08-06-26_172_7876648036956003091/10000
POSTHOOK: query: select PI() FROM src LIMIT 1
POSTHOOK: type: QUERY
POSTHOOK: Input: default@src
POSTHOOK: Output: file:/home/edward/hive/hive/build/ql/scratchdir/hive_2010-03-25_08-06-26_172_7876648036956003091/10000
3.141592653589793
PREHOOK: query: DESCRIBE FUNCTION PI
PREHOOK: type: DESCFUNCTION
POSTHOOK: query: DESCRIBE FUNCTION PI
POSTHOOK: type: DESCFUNCTION
PI() - returns pi 
PREHOOK: query: DESCRIBE FUNCTION EXTENDED PI
PREHOOK: type: DESCFUNCTION
POSTHOOK: query: DESCRIBE FUNCTION EXTENDED PI
POSTHOOK: type: DESCFUNCTION
PI() - returns pi 
Synonyms: pi
Example:
 > SELECT PI() FROM src LIMIT 1;
 3.14159...
PREHOOK: query: explain 
select PI() FROM src LIMIT 1
PREHOOK: type: QUERY
POSTHOOK: query: explain 
select PI() FROM src LIMIT 1
POSTHOOK: type: QUERY
ABSTRACT SYNTAX TREE:
  (TOK_QUERY (TOK_FROM (TOK_TABREF src)) (TOK_INSERT (TOK_DESTINATION (TOK_DIR TOK_TMP_FILE)) (TOK_SELECT (TOK_SELEXPR (TOK_FUNCTION PI))) (TOK_LIMIT 1)))

STAGE DEPENDENCIES:
  Stage-1 is a root stage
  Stage-0 is a root stage

STAGE PLANS:
  Stage: Stage-1
    Map Reduce
      Alias -> Map Operator Tree:
        src 
          TableScan
            alias: src
            Select Operator
              expressions:
                    expr: pi()
                    type: double
              outputColumnNames: _col0
              Limit
                File Output Operator
                  compressed: false
                  GlobalTableId: 0
                  table:
                      input format: org.apache.hadoop.mapred.TextInputFormat
                      output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat

  Stage: Stage-0
    Fetch Operator
      limit: 1


PREHOOK: query: select PI() FROM src LIMIT 1
PREHOOK: type: QUERY
PREHOOK: Input: default@src
PREHOOK: Output: file:/home/edward/hive/hive/build/ql/scratchdir/hive_2010-03-25_08-06-36_503_790918184243965542/10000
POSTHOOK: query: select PI() FROM src LIMIT 1
POSTHOOK: type: QUERY
POSTHOOK: Input: default@src
POSTHOOK: Output: file:/home/edward/hive/hive/build/ql/scratchdir/hive_2010-03-25_08-06-36_503_790918184243965542/10000
3.141592653589793
PREHOOK: query: DESCRIBE FUNCTION PI
PREHOOK: type: DESCFUNCTION
POSTHOOK: query: DESCRIBE FUNCTION PI
POSTHOOK: type: DESCFUNCTION
PI() - returns pi 
PREHOOK: query: DESCRIBE FUNCTION EXTENDED PI
PREHOOK: type: DESCFUNCTION
POSTHOOK: query: DESCRIBE FUNCTION EXTENDED PI
POSTHOOK: type: DESCFUNCTION
PI() - returns pi 
Synonyms: pi
Example:
 > SELECT PI() FROM src LIMIT 1;
 3.14159...